Hottest and Coldest Temperatures Ever in Pittsburgh on December 09

On December 9th in Pittsburgh, the hottest temperature ever recorded was 64.9°F in 1952, while the coldest temperature ever recorded was 1.0°F in 1958. The average temperature for this date is 33.24°F, with an average high of 41.07°F and an average low of 25.41°F. Looking back to the years mentioned, in 1952, the world's first successful surgical removal of a human lung tumor was performed, marking a significant milestone in medical history.